It is not only responsible for pumping the refrigerant throughout the AC system but also converting the refrigerant from gaseous state to liquid state as it passes through the condenser. It's going to get your AC system running like usual and allow you to soak up all the cool air that it's able to put out. Follow the A/C recharge kit recommendation to avoid putting air into the system. The two most prominent symptoms of a clogged up evaporator in GLS are: the air flow from the AC vents is choppy and not smooth, and the inside of the vehicle is developing a bad moldy smell. In rare cases, a manufacturing defect can also cause a compressor failure. Check which type of refrigerant your vehicle uses. . If the fuse is blown, replace it with a new one with the specified amp rating. It also puts unnecessary strain on the entire AC system which negatively impacts the fuel consumption. It tells you nothing about the refrigerant quantity. Check all the relevant fuses and relays related to the air-conditioning system in your GLS. 1992 mercedes-benz 500sl. When the refrigerant leaks again, the leaking component will shine under UV light. The LED lights should continue to flash for about a minute or so before they stop flashing. This article will overview the A/C system, common problems, and repairs you can perform independently. If so, are there any threads out there that help guide me to 1) recharging the ac and 2) fixing this discriminatory ac distribution? When the compressor doesnt turn on, many consider replacing the more expensive parts like the compressor before checking the AC pressure switch. Questions / Mercedes-Benz / C230 / 2005 / AC blowing hot air; AC blowing hot air. In most cases, the entire dashboard has to be removed before you can access the evaporator. . 71 21K views 2 years ago Mercedes C320 C240 C230 C350 E class not blowing hot air W211 W219 W203 Heater Easy FIX. Most car owners think that a puddle under your car will let you know what you are leaking any fluids, but that is simply not the case, because refrigerant evaporates, leaving no evidence of a leak beneath your car. In any case, it is advisable for laypersons to visit a workshop. Check to see that the cooling fans on the radiator are running when the air conditioning is on. Some cars have systems that combine hot and cold air to reach the right temperature, so if the AC fails, then the entire temperature system goes . thank you unitfreebie for all that information this is my first summer with this car, the ac was not working for as long as i have had it so i dont know the conditions underwhich it stoped working. following a recharge. But its definitely worth a shot since your alternative is going to be either riding around in a hot car or paying for costly AC repairs. Set the cooling fans on high climate control. This can be done, for example, with a vacuum cleaner or a compressed air system, removing at least a large part of the visible dirt particles. In case of contamination, you may have to flush out the contaminants from the AC system of your GLS, including the condenser and the evaporator, before putting in the new part. The OBDII connector is usually located under the dashboard. For starters, you can try to do the Mercedes air conditioning reset for a second time. Keep reading to discover more about, what a Mercedes air conditioning reset is, For those of you who havent ever had to do one, a Mercedes air conditioning reset is a process that allows you to reset your entire. If the reading moves toward the normal range, continue until the system is charged. Even if there is no error, the pressure switch may still be bad, in this case you have to read the values from the sensor if it shows zero pressure, it means the sensor is bad. Or, it may cause the compressor to run continuously and freeze up the evaporator coil resulting in poor cooling and reduced airflow. PeachParts Mercedes-Benz Forum. Due to the complexity of the replacement job, it is not recommended as a DIY project. today to find out more about how to sell a Mercedes fast for cash. There are two ports in the air conditioning system of GLS. Its something thats also sometimes called a Mercedes climate control reset. Dirty evaporator can also cause GLE AC to blow hot air. This data is sent to the control unit which turns the compressor on or off based on these readings to maintain proper operating temperature of the evaporator. Put pressure into a fluid you will increase its temperature. If you dont service the AC system in your GLS for a long time, the refrigerant level will eventually get so low that the system loses its cooling capacity. Check the operation of the climate control and the A/C button. Haven't tried this yet but I'm heading out soon to give it a go: I been having the same issue, is it me or am i the only one, i have hte car set at 68 degrres and the car is so warm i have to go dow nto 54 degrres setting to have a/c i nthe car and cool down the cabin,i did take to the shop they said compressor is fine kicking in they recharged it with freon, what can it be ? Too much oil: If there is excessive amount of oil added with the refrigerant, it can cause compressor performance issues which reduces cooling efficiency, and can also cause premature compressor failure. Since some OBD codes are manufacturer-specific, the scanner will be able to give you more accurate information if you enter more details about your GLS. Excessive oil can also reduce the performance of the compressor and can cause it to fail prematurely. Youll also need to prepare to pay whatever its going to cost to fix your AC system. Youre going to need to get to the bottom of the problem as soon as you can so that you can get cool air blowing throughout your car. You do not want to start the car since thatll prevent you from being able to perform a Mercedes air conditioning reset. Leaks are the most common problem associated with the air conditioning system. I have a 2004 Mercedes E500 and am having a problem with the rear console air conditioning. Too much oil: If there is excessive amount of oil added with the refrigerant, it can cause compressor performance issues which reduces cooling efficiency, and can also cause premature compressor failure. Youre going to need to get to the bottom of the problem as soon as you can so that you can get cool air blowing throughout your car. and well respond with an offer almost on the spot. Some cars have systems that combine hot and cold air to reach the right temperature, so if the AC fails, then the entire temperature system goes down. 2005 Mercedes E-Class E320 3.2CDI. If you dont service the AC system in your GLE for a long time, the refrigerant level will eventually get so low that the system loses its cooling capacity. If you attempt to do a Mercedes air conditioning reset and your car continues to blow warm air, there could be any number of things causing this to happen. Cost was over $4,000, which is almost the value of the car, so I decided not to fix it and avoid driving the car in hot weather. Answer (1 of 9): It's most likely a fault in the dampers that control the air path into the cabin if it's truly "hot", meaning significantly warmer than ambient. Maybe even charge the A/C system if needed. Check the AC compressor. Check out what you can find searching and see if it fits the description. In some vehicle models, cold and hot air are mixed to create the preferred temperature. A worn out or weakened blower motor can also produce abnormal sounds when in operation. The pulley spins any time the engine is running. To get around it, youre going to want to try and do a Mercedes air conditioning reset sooner rather than later. Most refrigerants include a leak sealer that will seal small leaks in addition to filling the R134a freon. For decades, Mercedes-Benz has been the gold standard of high-end vehicles, and the drivers who invest in Mercedes are never disappointed. If only hot air comes out of the air vents in your GLE, then the problem probably lies somewhere else. In case of severe contamination, multiple components may have to be replaced, including the condenser, the evaporator and the compressor. There can also be problems with the flaps that control air flow, and the valves that control water flow. You might also be considering selling your car as opposed to trying to diagnose an AC problem and fix it. The operation of the A/C in your car is based on the First Law of Thermodynamics if you want to learn the physics behind it. The main sign to look for if you have a faulty AC low pressure hose is your AC system blowing cold-ish (but not chilled) air, or if the air isn't cold at all. 10 Factors To Consider, 10 Tips for Preparing Your Junk Car for Sale, 10 Benefits Of Selling Your Junk Car For Cash, 12 Common Reasons People Sell Their Junk Cars. To get around it, youre going to want to try and do a Mercedes air conditioning reset sooner rather than later. The refrigerant pressure is affected by the outside atmospheric temperature. why your car might be blowing warm air instead of cool air. If the system works but only for a short time, again, you have a leak that you need to locate and repair. The OBDII connector is usually located under the dashboard. Replace AC compressor for MERCEDES-BENZ SL (R107) in case of defects or service life expiry. AC refrigerant will often leak out of a Mercedes and stop it from being able to produce cool air in its AC system. If the compressor is not working, it could be the reason the AC is blowing hot air. Keep in mind, an AC compressor can fail without any apparent cause, especially in older vehicles or in vehicles that have racked up too many miles. SOURCE: Air conditioner blows hot on one side 1999 mercedes e320. The pressure values based on ambient temperatures differ depending on the type of the refrigerant. Cleaning the evaporator in GLS is not a simple task. Shop foreman (dealer) MB technical information Specialist (15 years) 190E 2.3 16V ITS SCCA race car (sold) 1986 190E 2.3 16V 2.5 (sold) Retired Moderator It is important that you enter this 100% correctly, otherwise the result of the search may be inaccurate. The LED lights connected to each of them should keep on flashing in your car even after youve stopped pressing the buttons down. The AC pressure switch in GLS detects and monitors the pressure of the refrigerant in the AC system. Electrical issues in the climate control system, If a Mercedes air conditioning reset doesnt help to fix the problem with your cars AC system, youll need to take your vehicle in for service. Look at the puller, and you should be able to see if it is spinning or not. "url": "https://dellsservicecenter.com/wp-content/uploads/2017/07/Mercedes-AC-Blowing-Hot-Air.jpg", For those of you who havent ever had to do one, a Mercedes air conditioning reset is a process that allows you to reset your entire AC system at one time. This can be done, for example, with a vacuum cleaner or a compressed air system, removing at least a large part of the visible dirt particles. . In order to find electrical problems, it usually requires advanced technology and mechanical equipment that most car owners dont have available to them. 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If the system is low, then start recharging the system using the instructions that came with your recharge kit. { I am assuming the the ac off light is lit on the climate control system. Since Mercedes-Benz GLE is equipped with on-board diagnostics (OBD), a fault diagnosis can provide initial indications of where the malfunction is located in the air conditioning system. A dirty filter causes the overall ventilation of the interior to deteriorate resulting in reduced cooling and air flow. If it's a newer Benz, find someone that can pull the settings from the onboard computer. Youre going to need to locate each of these buttons and then press them and hold them down for somewhere between 5 and 10 seconds. Working on your Mercedes Benz's aircon system is time-consuming but not . There are two ports in the air conditioning system of GLE. Both of these are at risk of clogging due to contamination, for example due to metal shavings from a failing compressor. Search: Mercedes Ac Not Cold Enough. One of the most common complaints of Mercedes users is issues with the air conditioning system. As you charge the system, you may notice the A/C starts to work. Dirty evaporator can also cause GLS AC to blow hot air. But if its getting up there in age, you might be better off getting rid of it rather than spending a small fortune on AC repairs. OP is no longer with us. I have a 2000 c230 compressor. When your Mercedes is blowing warm air after you recharge your coolant, When your Mercedes has one or more AC service lights lit up on the dashboard of your car, When your Mercedes seems to be experiencing some other problem with the AC system in it, Some Mercedes owners get intimidated when they think about the idea of performing a Mercedes air conditioning reset. This is the opposite process that the compressor performs. Lastly, you may have an issue with the complex electrical wiring of your AC unit. Youll need to work a little bit harder to diagnose whats going on with your AC system so that you can fix it. After you have your key in the second position in your ignition cylinder, you can then move on to focusing on the buttons that are used for recirculating air and defrosting in your car. Just have it refilled and you can drive with pleasant temperatures again. Mercedes Benz Evaporator. Hopefully, your system was low, and it is working again. Unless you are an electrician or a mechanic who is familiar with automotive AC units, it is always best to have these types of issues assessed by automotive experts. Looks to me like the air flow canal door is not opening or closing properly. How to replace an AC condenser. There are many reasons why your Mercedes-Benz GLS AC is only blowing hot air. Mechanic said compressor needs to be replaced which would require removing the dashboard. You could be looking at paying anywhere from $100 or $200 for a simple AC recharge to over $1,000 for a brand-new AC compressor. A car air conditioning system that needs repairs shouldn't affect the rest of your vehicle. Check the owners manual of your vehicle or the fuse box cover to find the exact location of the AC fuses. A professional mechanic or technician should be consulted for any problems not covered below. Excessive oil can also reduce the performance of the compressor and can cause it to fail prematurely. You can recharge your AC through the low-pressure port with a do it yourself AC recharge kit. Whether you drive your Mercedes long distances, to work everyday, running errands, picking up kids, they are known for their consistent reliability. The leak can be diagnosed by injecting small amount of fluorescent dye into the AC system. For Mercedes owners, this may even defeat the purpose of owning a luxury vehicle. But its definitely worth a shot since your alternative is going to be either riding around in a hot car or paying for costly AC repairs. Mercedes-Benz 600SL AC Condenser Cost . Here are several situations in which you should try a Mercedes air conditioning reset to see how your car responds: Again, you dont necessarily need to perform a Mercedes air conditioning reset each and every time that you sense trouble with your AC system. , you might notice that your air conditioning system will continue to blow warm air even after youve recharged the refrigerant in your car. This happens to protect the system. 2000 Mercedes-Benz E320 167,000 mi, Its going to get your AC system running like usual and allow you to soak up all the cool air that its able to put out. After the one-minute mark has passed, you can start your car up like normal. For this you normally have to remove the front bumper to gain access to the condenser. The Fora platform includes forum software by XenForo. All Rights Reserved. JavaScript is disabled. Therefore, it is recommended to do this in a workshop. This can be a very frustrating problem for many people! Leakage from A/C system hoses is often indicated by an accumulation of dirt and oil, particularly at connections and fittings. The blend door actuator may require recalibration after replacement. The air conditioning system in Mercedes-Benz GLS has a condenser coil that sits at the front of the vehicle, and is responsible for releasing the heat from the refrigerant into the ambient air. Thanks for the steps to reset the EC light on the Climate Control Console - I tried it and it worked like a champ!! If there isnt enough oil added with the refrigerant or to the compressor itself if it was replaced, the internal components of the compressor will wear out and cease to function. Compressors switch on and then off very quickly. 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